CN214657817U - Removable even roof beam connected node - Google Patents
Removable even roof beam connected node Download PDFInfo
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- CN214657817U CN214657817U CN202120514279.0U CN202120514279U CN214657817U CN 214657817 U CN214657817 U CN 214657817U CN 202120514279 U CN202120514279 U CN 202120514279U CN 214657817 U CN214657817 U CN 214657817U
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Abstract
The utility model discloses a removable even roof beam connected node belongs to civil engineering technical field, has solved among the prior art removable even roof beam and has changed the problem that the degree of difficulty is big, the quality is difficult for guaranteeing at practical application in-process component installation and node change. The replaceable connecting beam joint of the utility model comprises an energy dissipation beam section end plate, a non-energy dissipation beam section end plate and an end plate connecting piece; the middle part of the energy dissipation beam section end plate is provided with a key groove, the middle part of the non-energy dissipation beam section end plate is provided with a shear key, and the shear key is arranged in the key groove; the energy dissipation beam section end plate and the non-energy dissipation beam section end plate are connected through an end plate connecting piece. The utility model discloses the change of energy dissipation roof beam section after can simple quick realization damage.
Description
Technical Field
The utility model belongs to the technical field of civil engineering, a building engineering technique is related to, in particular to removable even roof beam connected node.
Background
High-rise structures have rapidly developed in recent years, and many of them have become landmark buildings in cities. The shear wall structure system is widely applied to high-rise and super high-rise buildings due to good stress performance and high economical efficiency, and is one of the most main structural forms in urban buildings in China. In a shear wall structure system, the length of a monolithic wall is not too long, and functional requirements such as opening of a hole exist in practical use, so that the shear wall needs to be connected by arranging connecting beams, wherein the connecting beams play a role in connection and are main energy consumption components when the shear wall structure system is subjected to earthquake action.
China belongs to the countries with multiple earthquakes, and statistics shows that the earthquakes occur more than 30 times per year in China in 2007-2016, wherein 7-grade or more extra-large earthquakes are 7 times, and therefore economic and mental dual injuries are brought to the country and people. Compared with the medium and low-rise buildings, the high-rise building has higher economic and time costs for repairing and reinforcing after earthquake. The replaceable connecting beam is applied to a shear wall structure system, the anti-seismic performance of the structure can be improved, the maintenance and recovery of functions after the earthquake are facilitated, and the feasibility of large-scale popularization is realized in China.
However, the existing replaceable connecting beam has the problems of high difficulty in component installation and node replacement and difficulty in quality guarantee in the actual application process, and the application of the components is limited to a certain extent.
SUMMERY OF THE UTILITY MODEL
In view of the above analysis, the utility model aims at providing a removable even roof beam connected node for solve among the prior art removable even roof beam in the practical application in-process component installation with the node change degree of difficulty big, the difficult assurance scheduling problem of quality.
The purpose of the utility model is mainly realized through the following technical scheme:
a replaceable connecting beam connecting node comprises an energy dissipation beam section end plate, a non-energy dissipation beam section end plate and an end plate connecting piece;
the middle part of the energy dissipation beam section end plate is provided with a key groove, the middle part of the non-energy dissipation beam section end plate is provided with a shear key, and the shear key is arranged in the key groove;
the energy dissipation beam section end plate and the non-energy dissipation beam section end plate are connected through an end plate connecting piece.
Furthermore, the upper end part and the lower end part of the energy dissipation beam section end plate are provided with long hole grooves; and the upper end part and the lower end part of the non-energy dissipation beam section end plate are provided with round hole grooves.
Furthermore, the circular hole grooves correspond to the long hole grooves one by one; the end plate connecting piece is connected with the energy dissipation beam section end plate and the non-energy dissipation beam section end plate through the long hole groove and the round hole groove.
Further, the steel plug is also included;
the size of the shear key is smaller than that of the key slot, and the steel plug is used for filling a gap between the shear key and the key slot.
Further, the key slot is trapezoidal or parallelogram.
Further, the shear key is rectangular.
Further, the steel plug is wedge-shaped.
Furthermore, the height and width of the energy dissipation beam section end plate and the non-energy dissipation beam section end plate are consistent.
Further, the length of the steel plug is larger than the width of the energy dissipation beam section end plate and the non-energy dissipation beam section end plate.
Furthermore, 2 steel plugs are arranged and are respectively driven into an upper gap and a lower gap formed by the shear key and the key groove; 2 steel plugs are driven into corresponding gaps in the same direction or opposite directions.
The utility model discloses removable even roof beam connected node's theory of operation:
1) in a shear wall structure system, the stress of the midspan area of the connecting beam component has the characteristics of small bending moment and large shearing force, and the connecting area of the energy dissipation beam section and the non-energy dissipation beam section of the replaceable connecting beam component also has the stress characteristic. The utility model discloses a removable even roof beam connected node carries out the shear force transmission through setting up shear key and keyway respectively at energy dissipation beam section end plate and non-energy dissipation beam section end plate middle part, carries out the moment of flexure transmission through setting up the bolt in energy dissipation beam section end plate and non-energy dissipation beam section end plate upper and lower part, has realized that the separation of moment of flexure and shear force passes the power, and the mechanics route is clear and definite, the dependable performance.
2) Because the replaceable coupling beam energy dissipation beam section is generally processed and manufactured by adopting a low-yield-point metal material, or is specially designed (such as: opening holes, introducing dampers and the like), so that when a shear wall structure system applying the replaceable connecting beam components encounters earthquake action, damage is mainly concentrated on energy dissipation beam sections, and the energy dissipation beam sections need to be replaced after the earthquake. When the damaged energy dissipation beam section is removed, the size of the key groove of the energy dissipation beam section end plate is larger than the size of the shear key of the non-energy dissipation beam section end plate, so that the energy dissipation beam section can be easily removed along the shear key direction after the bolt and the steel plug are removed; when installing new energy dissipation beam segment, because energy dissipation beam segment end plate has set up the slot of trompil, and the keyway size of energy dissipation beam segment end plate is greater than the shear key size of non-energy dissipation beam segment end plate, so have more sufficient adjustment space, can show the installation degree of difficulty that reduces new.
Compared with the prior art, the utility model discloses can realize one of following technological effect at least:
1) the utility model discloses a shear key carries out the shear force transmission, carries out the moment of flexure transmission through the bolt crowd, has realized the separation biography power of moment of flexure and shear force, and the mechanics approach is clear and definite, the dependable performance.
2) The utility model discloses the end plate connecting piece only needs the transmission moment of flexure and plays the connection effect, consequently can show the quantity that reduces the end plate connecting piece, reduces the design and the construction degree of difficulty.
3) The utility model discloses be greater than non-energy dissipation beam segment end plate shear key with the size of the keyway of energy dissipation beam segment end plate, can provide more sufficient adjustment space for the dismantlement and the installation of energy dissipation beam segment, show the change degree of difficulty that reduces energy dissipation beam segment.
4) The utility model discloses set up the slot hole groove, can avoid end plate connecting piece transmission shear force on the one hand, realize that end plate connecting piece only transmits the effect of moment of flexure, on the other hand for the removable residual shear angle of energy dissipation beam segment is great, and the specially adapted high-intensity area probably produces great shear deformation's removable even roof beam component.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the figures.
FIG. 1 is a schematic structural view of a trapezoidal keyway replaceable coupling beam connection node;
FIG. 2 is an A-A view of a trapezoidal keyway replaceable coupling beam connection node;
FIG. 3 is a schematic structural view of a parallelogram keyway replaceable coupling bar connection node;
FIG. 4 is an A-A view of a parallelogram keyway replaceable link beam connection node;
figure 5 is a schematic view of a non-energy dissipating beam segment end plate;
figure 6 is a side view of a non-energy dissipating beam segment end plate;
figure 7 is a schematic view of an end plate of an energy dissipating beam segment with trapezoidal keyways;
figure 8 is a side view of an end plate of a dissipater beam segment with trapezoidal keyways;
figure 9 is a schematic view of an end plate of an energy dissipating beam segment of a parallelogram keyway;
figure 10 is a side view of an end plate of a section of a beam dissipating parallelogram keyway;
figure 11 is the energy dissipating beam section load versus diagonal displacement curve of the shear loading test of example 1.
Reference numerals:
the energy dissipation beam comprises 1-an energy dissipation beam section end plate, 101-a key groove, 102-a long hole groove, 2-a non-energy dissipation beam section end plate, 201-a shear key, 202-a round hole groove, 3-a high-strength bolt and 4-a steel plug.
Detailed Description
A replaceable coupling beam joint is described in further detail below with reference to specific embodiments, which are provided for purposes of comparison and explanation only, and the present invention is not limited to these embodiments.
A replaceable coupling beam connecting node comprises an energy dissipation beam section end plate 1, a non-energy dissipation beam section end plate 2 and an end plate connecting piece; the middle part of the energy dissipation beam section end plate 1 is provided with a key groove 101, and the upper end part and the lower end part of the energy dissipation beam section end plate 1 are both provided with a long hole groove 102; the middle part of the non-energy dissipation beam section end plate 2 is provided with a shear key 201, and the upper end part and the lower end part of the non-energy dissipation beam section end plate 2 are both provided with round hole grooves 202; the circular hole slots 202 correspond to the long hole slots 102 one by one; the end plate connecting piece is connected with the energy dissipation beam section end plate 1 and the non-energy dissipation beam section end plate 2 through the long hole groove 102 and the round hole groove 202; the shear key 201 is disposed within the keyway 101. Illustratively, the end plate connection is a high strength bolt 3. The energy dissipation beam section end plate 1 and the non-energy dissipation beam section end plate 2 are connected through high-strength bolts 3 in a friction type connection mode.
In a shear wall structure system, the stress of the midspan area of the connecting beam component has the characteristics of small bending moment and large shearing force, and the connecting area of the energy dissipation beam section and the non-energy dissipation beam section of the replaceable connecting beam component also has the stress characteristic. The utility model discloses a removable even roof beam connected node carries out the shear force transmission through setting up keyway 101 and shear key 201 respectively at energy dissipation beam section end plate 1 and non-energy dissipation beam section end plate 2 middle parts, carries out the moment of flexure transmission through setting up high strength bolts 3 in energy dissipation beam section end plate 1 and non-energy dissipation beam section end plate 2 upper and lower part, has realized the separation of moment of flexure and shear force and has passed the power, and the mechanics route is clear and definite, the dependable performance.
The utility model discloses removable even roof beam connected node make full use of removable even the regional shear force of roof beam connected is big, the atress characteristics that the moment of flexure is little, high strength bolt 3 only need transmit the moment of flexure and play the connection effect, consequently can show the quantity that reduces high strength bolt 3, reduces the design and the construction degree of difficulty.
The bolt holes in the end plates 1 of the energy dissipation beam sections are long hole grooves 102, so that on one hand, the high-strength bolts 3 can be prevented from transferring shearing force, and the effect that the high-strength bolts 3 only transfer bending moment is achieved, on the other hand, the long hole grooves 102 can enable replaceable residual shearing angles of the energy dissipation beam sections to be large, and the energy dissipation beam section is particularly suitable for replaceable coupling beam components which are likely to generate large shearing deformation in high-intensity areas. The plurality of long hole grooves 102 are arranged, and the adjacent long hole grooves 102 are arranged at even intervals.
The replaceable connecting beam connecting node also comprises a steel plug 4; the shear key 201 is smaller in size than the keyway 101, and the steel plug 4 is used to fill the gap between the shear key 201 and the keyway 101. The shear key 201 size is less than keyway 101 size, can provide more sufficient adjustment space for the dismantlement and the installation of energy dissipation beam segment, is showing the change degree of difficulty that reduces the energy dissipation beam segment.
Specifically, the shear key 201 is rectangular, the key slot 101 is trapezoidal or parallelogram, and the steel plug 4 is wedge-shaped, and may be, for example, a trapezoidal steel plug 4. 2 steel plugs 4 are arranged and respectively driven into an upper gap and a lower gap formed by the shear key 201 and the key slot 101; 2 steel plugs 4 are driven into corresponding gaps in the same direction or opposite directions. When the energy dissipation beam section key groove 101 is trapezoidal, two steel plugs 4 are driven into the gap of the key groove 101 in the vertical same direction; when the energy dissipation beam section key groove 101 is a parallelogram, two steel plugs 4 are driven into the gap of the key groove 101 in an up-down opposite mode. The height and width of the energy dissipation beam section end plate 1 and the non-energy dissipation beam section end plate 2 are consistent, and the length of the steel plug 4 is slightly larger than the width of the energy dissipation beam section end plate 1 and the non-energy dissipation beam section end plate 2. Preferably, the steel plug 4 is a right trapezoid, and a right-angled side in the length direction of the steel plug 4 is in contact with the shear key 201.
The energy dissipation beam section end plate 1 and the non-energy dissipation beam section end plate 2 are made of steel. In order to realize the working mechanism that the yield energy consumption is concentrated on the energy dissipation beam section and the replaceable function of the post-earthquake coupling beam component, the energy dissipation beam section of the replaceable coupling beam is generally processed and manufactured by adopting metal materials with low yield point or is a section steel beam which is specially designed (such as drilling, introducing a damper and the like); the non-energy dissipation beam section can be in various forms such as a reinforced concrete beam, a steel pipe concrete beam, a shaped steel beam and the like. Therefore, the energy dissipation beam section end plate 1 can be directly connected with the energy dissipation beam section through a welding seam, and the connection mode of the non-energy dissipation beam section end plate 2 and the non-energy dissipation beam section is determined according to actual conditions. When the non-energy dissipation beam section is a section steel beam or a steel pipe concrete beam, the non-energy dissipation beam section end plate 2 can be directly connected with the non-energy dissipation beam section through a welding line; when the non-energy dissipation beam section is a reinforced concrete beam or a steel reinforced concrete beam, the steel embedded part can be arranged at the end part of the non-energy dissipation beam section, and then the non-energy dissipation beam section is connected with the end plate 2 of the non-energy dissipation beam section through a welding line.
When the connection node is designed, the shearing force of the replaceable connecting beam connection node is borne by the shear key 201, and the bending moment is borne by the high-strength bolt 3, so that the size of the shear key 201 at the connection part and the number of the high-strength bolts 3 can be respectively designed. The shear key 201 needs to meet the shear requirement and the local pressure requirement, namely: V/Vcr is less than or equal to 1 and V/Ncr is less than or equal to 1, wherein V is the design shear force, Vcr is the full-section yield shear force of the shear key 201, and Ncr is the local pressure bearing capacity of the shear key 201. The size of the key slot 101 can be determined after the size of the shear key 201 is determined, namely: the volume of the key groove is δ · shear key volume, where δ >1, which can be determined according to actual machining conditions, and is 2.3 in the present embodiment. High strength bolt 3 needs to satisfy the bending resistance requirement, to a removable even roof beam connected node, and the design moment of flexure can be regarded as acting on the bolt crowd with the form of drawing (pressure), promptly: (M/h)/(n, Ntb) is less than or equal to 1, wherein M is a design bending moment, h is the distance between the resultant force points of the upper bolt group and the lower bolt group, n is the number of bolts at one side, and Ntb is the tensile bearing capacity of a single bolt.
The mounting process of the replaceable connecting beam connecting node is as follows: 1) wedging the shear key 201 into the key groove 101 in the width direction (direction perpendicular to the paper surface); 2) installing a high-strength bolt 3; 3) the gap of the key groove 101 is tightly filled by driving the steel plug 4.
In an embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 5 to fig. 8, the key groove 101 formed in the middle of the energy dissipation beam segment end plate 1 is trapezoidal. The installation process of the connection node in this embodiment is as follows: and (3) wedging the shear key 201 into the key groove 101 along the width direction, then adjusting the position of the energy dissipation beam section end plate 1, installing the high-strength bolt 3, and finally driving the steel plug 4 into a gap between the shear key 201 and the key groove 101 in the same vertical direction until the filling is compact.
Another embodiment of the present invention, as shown in fig. 3 to 6, 9 and 10, is substantially the same as that of embodiment 1, except that the middle key slot 101 of the energy dissipating beam segment 1 is configured as a parallelogram. The installation process of the connection node in this embodiment is as follows: and (3) wedging the shear key 201 into the key groove 101 along the horizontal direction, then adjusting the position of the energy dissipation beam section end plate 1, installing the high-strength bolt 3, and finally driving the steel plug 4 into the gap between the shear key 201 and the key groove 101 in an up-down opposite direction until the gap is filled compactly.
An energy dissipation beam section replacement method adopts a replaceable connecting beam connecting node: after the steel plug 4 and the high-strength bolt 3 are taken down, the energy dissipation beam section damage piece is taken down along the width direction of the shear key 201; and (5) installing an energy dissipation beam section replacement part, and inserting the high-strength bolt 3 and the steel plug 4 to complete the replacement of the energy dissipation beam section.
Example 1
A replaceable coupling beam connecting node comprises an energy dissipation beam section end plate 1, a non-energy dissipation beam section end plate 2, a high-strength bolt 3 and a steel plug 4. The energy dissipation beam section end plate 1, the non-energy dissipation beam section end plate 2 and the steel plug 4 are made of Q345 steel, and the high-strength bolts are 6M 27 high-strength bolts (the two connecting nodes on the left side and the right side of the energy dissipation beam section are 12 high-strength bolts). The sizes of the energy dissipation beam section end plate 1 and the non-energy dissipation beam section end plate 2 are as follows: the height multiplied by the width is 620mm multiplied by 300mm, the thickness of the energy dissipation beam section end plate 1 is 40mm, and the thickness of the non-energy dissipation beam section end plate 2 is 30 mm; the rectangular shear key 201 is 60mm by 300mm by 20mm in height by width by thickness. The size of the trapezoidal key groove 101 is 170mm × 110mm × 300 mm. The steel plug 4 is a trapezoidal steel plug, and the size is divided into two types, the size lower bottom x the upper bottom x the height being 50mm x 15mm x 350mm, and the size lower bottom x the upper bottom x the height being 55mm x 20mm x 350 mm. 2 energy dissipation beam segment end plates 1 are respectively fixed at the two ends of the energy dissipation beam segment, and 2 energy dissipation beam segment end plates 1 are respectively connected with the corresponding non-energy dissipation beam segment end plates to form a test piece. In the test, H-shaped steel is adopted for the energy dissipation beam section and the non-energy dissipation beam section of the replaceable coupling beam, Q345 steel is adopted for the non-energy dissipation beam section, and Q345 steel and Q235 steel are respectively adopted for the flange and the web plate of the non-energy dissipation beam section.
A shear loading test and a replacement test after damage were performed on the test piece of example 1.
Shear loading test: the test piece obtained in example 1 was subjected to a shear loading test. The loading speed is 0.02mm/min before the energy dissipation beam section yields and 0.01mm/min after the energy dissipation beam section yields. Load is collected through a force sensor, strain development of the energy dissipation beam section and the non-energy dissipation beam section is monitored through a resistance type strain gauge, and displacement meters which are arranged diagonally collect diagonal displacement of the energy dissipation beam section and calculate a shear angle. In the whole test process, the non-energy dissipation beam section is in an elastic state, the shear yield load of the energy dissipation beam section is about 690kN, and the fit with the shear yield load calculated value 680kN is good; from fig. 11, it can be known that the deformation of the two diagonal lines of the energy dissipation beam section is synchronous and symmetrical, which illustrates that mainly shear deformation occurs; after loading, the high-strength bolts 3 at the nodes basically have no slippage. To sum up, the utility model discloses each part atress of removable even roof beam connected node is reasonable, pass power reliably.
Replacement test: the test piece obtained in the embodiment is repeatedly loaded and unloaded, the energy dissipation beam section is disassembled and replaced until the residual shear angle is 0.01rad, and the whole disassembling and assembling process is completed by two persons. In the dismantlement process, take off behind steel stopper 4 and the high strength bolt 3, energy dissipation beam section damage piece can easily be taken off along the key width direction that shears, and the observation energy dissipation beam section end plate bolt hole after the dismantlement finds no mar, proves that high strength bolt 3 does not basically have the slip. In the replacement process, because the size of keyway is greater than the shear key size, can easily pack into energy dissipation beam segment replacement piece, need not mechanical intervention, and all high-strength bolt 3 all can insert the keyhole, and the keyway space can be filled up to steel stopper 4. The whole disassembly and assembly process takes 50min, wherein the disassembly takes 15min and the assembly takes 35 min. To sum up, the utility model discloses removable even roof beam connected node receives machining error and welding deformation to influence for a short time, and bolt is small in quantity and the atress is reasonable, the change of energy dissipation roof beam section after the realization damage that can be simple quick.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A replaceable connecting beam connecting node is characterized by comprising an energy dissipation beam section end plate, a non-energy dissipation beam section end plate and an end plate connecting piece;
the middle part of the energy dissipation beam section end plate is provided with a key groove, the middle part of the non-energy dissipation beam section end plate is provided with a shear key, and the shear key is arranged in the key groove;
the energy dissipation beam section end plate and the non-energy dissipation beam section end plate are connected through an end plate connecting piece.
2. The replaceable coupling beam connection node of claim 1, wherein the energy dissipating beam segment end plates are provided with slot holes at both the upper end and the lower end; and the upper end part and the lower end part of the non-energy dissipation beam section end plate are provided with round hole grooves.
3. The replaceable coupling beam connecting node of claim 2, wherein the circular hole grooves correspond to the long hole grooves one to one; the end plate connecting piece is connected with the energy dissipation beam section end plate and the non-energy dissipation beam section end plate through the long hole groove and the round hole groove.
4. The replaceable coupling beam connection node of claim 1, further comprising a steel plug;
the size of the shear key is smaller than that of the key slot, and the steel plug is used for filling a gap between the shear key and the key slot.
5. The replaceable coupling beam connection node of claim 4, wherein the keyway is trapezoidal or parallelogram.
6. The replaceable coupling beam connection node of claim 5, wherein the shear key is rectangular.
7. The replaceable coupling beam connection node of claim 6, wherein the steel plug is wedge-shaped.
8. A replaceable coupling beam connection node according to any one of claims 1 to 7, wherein the energy dissipating beam section end plates correspond to the non-energy dissipating beam section end plates in height and width dimensions.
9. A replaceable coupling beam connection node according to any one of claims 4 to 7, wherein the length of the steel plugs is greater than the width of the energy dissipating beam section end plates and the non-energy dissipating beam section end plates.
10. The replaceable coupling beam connection node of claim 9, wherein 2 steel plugs are respectively driven into an upper gap and a lower gap formed by the shear key and the key groove; 2 steel plugs are driven into corresponding gaps in the same direction or opposite directions.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120514279.0U CN214657817U (en) | 2021-03-11 | 2021-03-11 | Removable even roof beam connected node |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120514279.0U CN214657817U (en) | 2021-03-11 | 2021-03-11 | Removable even roof beam connected node |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005829A (en) * | 2023-02-10 | 2023-04-25 | 江苏科技大学 | Slit energy consumption low-damage masonry infilled wall and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005829A (en) * | 2023-02-10 | 2023-04-25 | 江苏科技大学 | Slit energy consumption low-damage masonry infilled wall and construction method thereof |
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